LSISASX12 LSI, LSISASX12 Datasheet - Page 28

• Manufacturer Part Number: LSISASX12
• Manufacturer: LSI

Specifications of LSISASX12

• Lead Free Status / Rohs Status: Not Compliant

2.1.5
2.1.5.1
2.1.5.2
2.1.5.3
2-6
Configuration Manager
Boot Sequencer
Broadcast Processing
GPIO/LED Block
The configuration manager performs device configuration, broadcast
processing, startup sequencing, and spin-up control. The configuration
manager also configures the GPIO/LED usages and the SIO interface.
The configuration manager has a 64 Kbyte register block. The first
16 Kbytes is for the Config Manager registers, the second 16 Kbytes is
reserved for use by the APB Register Interface, the next 16 Kbytes is for
the LED control block, and the last 16 Kbytes is for the SIO interface
block.
describes these registers.
The configuration manager reads a boot record of the configuration
parameters through the boot loader. An external serial EEPROM stores
the boot record. The boot record provides a fixed data field for common
configuration information, and an optional data field for additional,
vendor-specific configuration information. The use of the
ISTWI_ADDR[1:0] signals permits a single serial EEPROM to provide
boot records for up to four LSISASx12 expanders.
Loader, Serial EEPROM, and API2C Interface,” on page 2-17
more information on the boot sequencer, boot record, and serial
EEPROM loader.
The configuration manager monitors broadcast request inputs from each
SPhynx module and requests the transmission of BROADCAST primitive
sequences by SPhynx modules.
The GPIO/LED block controls the activity of the GPIO signals. There are
52 independent GPIO signals. The function of each GPIO and LED
signal is set in the LED control registers, which are documented in
Section 4.2, “Configuration Manager Registers,”
Functional Description
Copyright © 2004, 2005 by LSI Logic Corporation. All rights reserved.
Activity LED – typically supported by the LED_ACT[11:0]/ signals
Status LED – typically supported by the LED_STATUS[11:0]/ signals
Section 4.2, “Configuration Manager Registers,” on page 4-3
Possible functions are:
Section 2.5, “Boot
provides